Some kind of fluid leak

[XxBIGxTEXxX]

So just rub it on the break pad or what?

 

[SunlitComet]

There are raised areas on the backing plate where the steel of shoes touch. You might see some wear on them now it would be those.

---------- Post added at 10:49 PM ---------- Previous post was at 10:48 PM ----------

Like this.

---------- Post added at 10:50 PM ---------- Previous post was at 10:49 PM ----------

Except I think there are four per shoe.

 

[XxBIGxTEXxX]

Ok... Thanks

 

[04SS99Denali]

lol welcome to the world of owning a OBS. ive had my fair share of morning guess that new fluid on the ground game

 

[XxBIGxTEXxX]

So i guess i installed something wrong because i have my break light on and for some reason my breaks are not working and i have to pump the break peddle in order for me to come to a stop.. does anyone have a link on how exactly they should be replaced or the steps on doing the rear breaks so i can do it right and what all i need to put in it and stuff..?

 

[SunlitComet]

Bled the air out of wheel cylinder?



Duo-Servo Brakes

Fig. 1 Exploded View Of Drum Brake Assembly.



Removal

1. Raise and support vehicle, then remove tire and wheel assembly.
2. Remove brake drum. If brake lining is dragging on brake drum, back off brake adjustment by rotating adjustment screw. If brake drum is rusted or corroded to axle flange and cannot be removed, lightly tap flange to drum mounting surface with a suitable hammer.
3. Using brake spring pliers or equivalent, unhook primary and secondary return springs, Fig. 1. Observe location of brake parts being removed to aid during installation.
4. Remove brake hold-down springs with suitable tool.
5. Lift actuating lever, then unhook actuator link from anchor pin and remove.
6. Remove actuating lever(s) and return spring.
7. Spread shoes apart and remove parking brake strut and spring.
8. Disconnect parking brake cable from lever, then remove brake shoes from backing plate.
9. Separate brake shoes by removing adjusting screw and spring, then unhook parking brake lever from shoe assembly.
10. Clean dirt from brake drum, backing plate and all other components. Do not use compressed air or dry brush to clean brake parts, as dust particles, if inhaled, can cause serious injury. Clean brake parts with a suitable clean cloth soaked in denature alcohol or a suitable vacuum cleaner to minimize airborne dust.
    
    
    Fig. 2 Measuring Brake Drum Inside Diameter
    

Fig. 3 Adjusting Brake Shoes To Brake Drum Inside Diameter



Installation

1. Lubricate parking brake lever fulcrum with suitable brake lube, then attach lever to brake shoe. Ensure lever operates smoothly.
2. Connect brake shoes with adjusting screw spring, then position adjusting screw. Ensure adjusting screw star wheel does not contact adjusting screw spring after installation, and also ensure RH thread adjusting screw is installed on left side of vehicle and LH thread adjusting screw is installed on right side of vehicle. When brake shoe installation is completed, ensure star wheel lines up with adjusting hole in backing plate.
3. Lightly lubricate backing plate shoe contact surfaces with suitable brake lube, then the area where parking brake cable contacts backing plate.
4. Install brake shoes on backing plate while engaging wheel cylinder links (if equipped) with shoe webbing. Connect parking brake cable to parking brake lever. The primary shoe (short lining) faces towards front of vehicle.
5. Install actuating levers, actuating link and return spring, Fig. 1.
6. Install hold-down springs with suitable tool.
7. Install primary and secondary shoe return springs using brake spring pliers or equivalent.
8. Using suitable brake drum to shoe gauge, Fig. 2, measure brake drum inside diameter. Adjust brake shoes to dimension obtained on outside portion of gauge, Fig. 3.
9. Install brake drum, wheel and tire assembly.
10. If any hydraulic connections have been opened, bleed brake system.
11. Adjust parking brake. Refer to Parking Brake System / Parking Brake / Adjustments / Manual Parking Brakes. See: Parking Brake System\Adjustments
12. Inspect all hydraulic lines and connections for leakage, and repair as necessary.
13. Check master cylinder fluid level and replenish as necessary.
14. Check brake pedal for proper feel and return.
15. Lower vehicle and road test. Do not severely apply brakes immediately after installation of new brake linings or permanent damage may occur to linings. Brakes must be applied moderately during first several hundred miles of operation to ensure proper burnishing of linings.

 

[XxBIGxTEXxX]

i did take the air out until fluid cam out.. i had to put the e-brake for that to come out and when i was pumping the break peddle, the pads wouldnt move unless i put the e-brake and then they would expand... could i have intaled something wrong?

 

[SunlitComet]

I think something jammed mechanically can you get some pics up that I can look at in morning? and just to clarify you had to apply parking brake and lock down in order to apply normal brake to apply? Wlll check back in morningor afternoon. going to sleep.

 

[gpracer1]

Try this link with step by step and pics.

http://www.handymanlyness.com/archives/auto/repair/brakes/GM/96_Yukon_4x4/rear/replace_brake_shoes_96_Yukon.html